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Work on scheduler

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This commit is contained in:
bdbrd 2025-11-08 17:05:49 +01:00
parent cbc51f523e
commit 14bced8243
8 changed files with 98 additions and 79 deletions
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61
src/scheduler/sched.c
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@ -16,7 +16,6 @@ int next_pid = 1;
void idle_task(){
kprintf("Hello world from bruhd task!\n");
for(;;);
}
void test_task(){
@ -26,45 +25,33 @@ void test_task(){
/* Setup a process structure */
proc *alloc_process(void){
asm("cli");
cpu_state *state = get_cpu_struct();
kprintf("hi10\n");
proc *proc_list = state->process_list;
uint8_t *sp;
proc *proc_list = get_cpu_struct()->process_list;
for(uint64_t i = 0; i < PROC_MAX; i++){
if(proc_list[i].state == UNUSED){
/* Set the process ready to be executed */
kprintf("hi6\n");
proc_list[i].state = READY;
proc_list[i].kstack = kmalloc(INITIAL_STACK_SIZE);
proc *p = &proc_list[i];
if(proc_list[i].kstack == NULL){
klog(LOG_ERROR, __func__, "Failed to alloc stack");
}
kprintf("hi7\n");
p->state = READY;
kprintf("pstate = 0x{x}\n", READY);
kprintf("actual: 0x{x}\n", p->state);
p->kstack = kmalloc(INITIAL_STACK_SIZE);
proc_list[i].pid = next_pid++;
p->pid = next_pid++;
sp = (uint8_t*)((uint64_t)proc_list[i].kstack + INITIAL_STACK_SIZE);
memset(&p->context, 0, sizeof(context));
proc_list[i].context.rip = 0;
proc_list[i].context.rsp = (uint64_t)sp;
p->context.rbp = (uint64_t)p->kstack;
p->context.rsp = (uint64_t)p->context.rbp + INITIAL_STACK_SIZE;
kprintf("actua2l: 0x{x}\n", p->state);
kprintf("hi8\n");
asm("sti");
return &proc_list[i];
return p;
}
}
asm("sti");
return NULL;
kprintf("Couldn't find free process!");
}
kstatus add_task(uint64_t *entry){
proc *proc = alloc_process();
@ -79,28 +66,31 @@ kstatus add_task(uint64_t *entry){
}
void scheduler_init(){
if(!get_cpu_struct_initialized()){
kprintf("sched: cpu struct not initialized!");
kkill();
}
cpu_state *state = get_cpu_struct();
if(state->current_process != NULL){
kprintf("sched: scheduler on CPU {d} already initialized!\n", state->lapic_id);
kkill();
}
kprintf("hi1\n");
proc *proc_list = state->process_list;
/* Put the idle task */
proc idle = {0, 0, 0, READY, {0, 0, 0, 0, 0, 0, 0, 0, 0}};
memset(proc_list, 0, sizeof(proc) * 512);
/* Make the idle structure the firstr process */
proc_list[0] = idle;
kprintf("hi2\n");
int pid = add_task((uint64_t*)idle_task);
add_task((uint64_t*)test_task);
kprintf("hi5\n");
for(;;){
for(int i = 0; i < PROC_MAX; i++){
if(proc_list[i].state == READY){
kprintf("Hell yeah");
context old_state = state->current_process->context;
@ -118,6 +108,7 @@ void scheduler_tick(){
cpu_state *state = get_cpu_struct();
proc *proc_list = state->process_list;
switch_context(&state->current_process->context, &state->scheduler_context);
}